This double-pole, single-throw sump pump switch is designed for external mounting and manufactured by a reputable brand in the HVAC industry. It is a reliable and durable option for controlling the operation of your sump pump, ensuring that it turns on and off at the appropriate times to prevent flooding or water damage. The F59A-2 model is easy to install and features a compact design that won't take up too much space in your system. With this switch, you can have peace of mind knowing that your sump pump will function efficiently and effectively.